Kyle Larson's car (32) gets airborne during a multi-car wreck on the final lap of the NASCAR Nationwide Series auto race Saturday, Feb. 23, 2013, at Daytona International Speedway in Daytona Beach, Fla.

Photograph by David Graham

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Kyle Larson, driver of the #32 Clorox Chevrolet, Justin Allgaier, driver of the #31 Brandt Chevrolet, Brian Scott, driver of the #2 Shore Lodge Chevrolet, and Brad Keselowski, driver of the #22 Discount Tire Dodge, are involved in an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Chris Graythan

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Kyle Larson, driver of the #32 Clorox Chevrolet, and Brad Keselowski, driver of the #22 Discount Tire Dodge, are involved in an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Chris Graythan

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Medical personnel remove an injured fan from the stands following an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Jonathan Ferrey

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Medical officials remove an injured fan from the stands following an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Jonathan Ferrey

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A tire rests in the stands after a crash at the conclusion of the NASCAR Nationwide Series auto race Saturday, Feb. 23, 2013, at Daytona International Speedway in Daytona Beach, Fla. Driver Kyle Larson's car hit the safety fence sending car parts and other debris flying into the stands injuring spectators.

Photograph by David Graham

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Officials gather debris from an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Todd Warshaw

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Tony Stewart, driver of the #33 Oreo/Ritz Chevrolet, and NASCAR Nationwide Series Director Joe Balash looks at the debris of the #32 Clorox Chevrolet, driven by Kyle Larson, following an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Todd Warshaw

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Kyle Larson, driver of the #32 Clorox Chevrolet, and Brad Keselowski, driver of the #22 Discount Tire Dodge, are involved in an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Chris Graythen

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Medical officials remove an injured fan from the stands following an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Jonathan Ferrey

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Kyle Larson, driver of the #32 Clorox Chevrolet, gets out of his car following an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Chris Graythan

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Debris from the #32 Clorox Chevrolet, driven by Kyle Larson, is removed from the stands following an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Matthwe Stockman

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Debris from the #32 Clorox Chevrolet, driven by Kyle Larson, is removed from the stands following an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Chris Graythen

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Injured spectators are treated after a crash at the conclusion of the NASCAR Nationwide Series auto race Saturday, Feb. 23, 2013, at Daytona International Speedway in Daytona Beach, Fla. Driver Kyle Larson's car hit the safety fence sending car parts and other debris flying into the stands.

Photograph by David Graham

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Damage to the wall is seen following an incident at the finish line of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Jonathan Ferrey

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Brad Keselowski, driver of the #22 Discount Tire Dodge, and Kyle Larson, driver of the #32 Clorox Chevrolet, are involved in an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Chris Graythen

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Kyle Larson, driver of the #32 Clorox Chevrolet, and Regan Smith, driver of the #7 Clean Coal Chevrolet, are involved in an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.

Photograph by Matthew Stockman

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Medical personnel assist fans sitting close to the wall following an incident at the finish of the NASCAR Nationwide Series DRIVE4COPD 300 at Daytona International Speedway on February 23, 2013 in Daytona Beach, Florida.